草业学报Issue(3)：75-84,10.DOI:10.11686/cyxb20140308
东北委陵菜属植物叶形态结构的研究及其分类学价值的探讨
Morphological study on the leaf structures of Potentilla in Northeastern China and its taxonomic value (Rosaceae)
摘要
Abstract
The leaf structures of 23 species of Potentilla in Northeastern China were studied by the GMA meth-od for the first time.The stipules varied in shape,including lanceolate,lanceolate-ovate,oval and lobate.The petioles in transverse section were usually heart-shaped,but could also be U-shaped,triangular or nearly round,and they usually had 3 vascular bundles.Glandular or nonglandular hairs were present on the epidermis of leaves.Stomata of the anomocytic type mainly occured on the lower epidermis.The phloem fibres were widely present in the taxa studied.The two woody species (Potentillafruticosa and P.glabra)share many features with herbaceous plants,e.g.trichome type,number and structure of vascular bundles.Our study supports the placement of the two woody species in the genus Potentilla and provides morphological evidence for further taxonomic study of the genus and also provides morphological data for further study of Potentilla in China and in the Rosaceae.关键词
委陵菜属/叶/形态/结构/分类/东北/蔷薇科Key words
Potentilla/leaf/morphology/structure/classification/Northeastern China/Rosaceae分类
农业科技引用本文复制引用
孙天航,刘玫,孙雪芹,程薪宇,茹剑..东北委陵菜属植物叶形态结构的研究及其分类学价值的探讨[J].草业学报,2014,(3):75-84,10.基金项目
黑龙江省及哈尔滨师范大学科学技术创新团队基金（KJTD2011-2）和黑龙江省高校重点实验室开放课题研究项目（ZK201202）资助。 （）
